Verified Solution • 2025–26 Session moderate

QJEEM19Phac85: JEE Main 2019 Physics - Class 12 JEEM19Phac85 Solution: The figure represents a voltage regulator circuit using a Zener …

The figure represents a voltage regulator circuit using a Zener diode. The breakdown voltage of the Zener diode is 6 V and the load resistance is, RL = 4kΩ. The series resistance of the circuit is Ri = 1 kΩ. If the battery voltage VB varies from 8 V to 16 V, what are the minimum and maximum values of the current through Zener diode? JEE Main 2019 (Online) 10th April Evening Slot Physics - Semiconductor Question 151 English

Multiple Choice Options

  • A 0.5 mA; 8.5 mA
  • B 1.5 mA; 8.5 mA
  • C 1 mA; 8.5 mA
  • D 0.5 mA; 6 mA

Step-by-Step Verified Solution

JEE Main 2019 (Online) 10th April Evening Slot Physics - Semiconductor Question 151 English Explanation Vbreakdwon = 6V, RL = 4kΩ, Ri = 1 kΩ

iL=64×10−3=1.5×10−3=1.5mA

ii = 2 × 10–3
i = i1 – iL = 0.5 mA – minimum current

ii = 10 × 10–3 = 10 mA
imax = 8.5 mA

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